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    <title>Title</title>
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<pre>
import math
        pos = [0, 0]
        while True:
            s = input()
            if not s:
                break
            if s == "STOP":
                break
            movement = s.split(" ")
            direction = movement[0]
            steps = int(movement[1])
            if direction == "UP":
                pos[0] += steps
            elif direction == "DOWN":
                pos[0] -= steps
            elif direction == "LEFT":
                pos[1] -= steps
            elif direction == "RIGHT":
                pos[1] += steps
            else:
                pass
        print(int(round(math.sqrt(pos[1] ** 2 + pos[0] ** 2))))

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